JERUSALEM -- Dozens of Palestinians were injured Tuesday in clashes with Israeli soldiers during the annual Nakba Day demonstrations held in Israel, the West Bank and Gaza Strip to mark the 1948 displacement of 800,000 Arabs during Israelís founding.

Thousands of Palestinians turned out to protest in Jerusalem, Ramallah, Gaza City and other cities to mark the nakba -- Arabic for catastrophe. Most of the demonstrations were peaceful, but clashes erupted between rock-throwing youths and Israeli soldiers at a checkpoint in East Jerusalem, in Hebron, and outside the Ofer prison facility near Ramallah.

Palestinian officials said more than 80 people were treated for mostly minor injuries caused by rubber bullets and tear-gas inhalation.

Despite the pockets of violence, the day passed far more calmly than last year, when 12 protesters were shot to death by Israeli and Lebanese security guards when they tried to storm across Israelís tightly controlled northern border from Lebanon and Syria.